feat(desktop): polish desktop shell and shared WebUI surfaces (#4195)

* feat(desktop): add native host scaffold

* feat(webui): track turns and usage in gateway

* feat(webui): polish desktop chat experience

* feat(apps): add ArcGIS and Joplin logos

* feat(desktop): polish shell and shared surfaces

* fix(webui): avoid preview chips for glob references

* test: align CI expectations for token fallback

* feat(webui): preview prompt rail entries

* feat(webui): add prompt navigator drawer

* style(webui): refine prompt navigator placement

* style(webui): align prompt navigator with header actions

* style(webui): simplify prompt navigator header

* refactor(webui): clean thread resource refresh

* feat(desktop): add native reply notifications

* fix(webui): preserve desktop restart and replay state

* fix(desktop): harden gateway proxy startup

* fix(web): fall back when readability is unavailable

* fix(desktop): hide window instead of closing on macos

* fix(webui): unify desktop header actions

* fix(webui): simplify prompt history rows

* fix(desktop): log notification delivery failures

* chore(desktop): clean source package artifacts

* fix(cron): support one-time relative reminders

* fix(webui): reveal scroll button in place

* Revert "fix(cron): support one-time relative reminders"

This reverts commit 4c4661da12.

* refactor(webui): extract token usage heatmap

* docs(desktop): clarify contributor guides

---------

Co-authored-by: chengyongru <2755839590@qq.com>

tests/webui/test_settings_api.py

@@ -14,6 +14,7 @@ from nanobot.webui.settings_api import (
     create_model_configuration,
     provider_models_payload,
     settings_payload,
+    settings_usage_payload,
     update_agent_settings,
     update_model_configuration,
     update_network_safety_settings,
@@ -242,6 +243,52 @@ def test_settings_payload_includes_network_safety_fields(
     assert payload["advanced"]["ssrf_whitelist_count"] == 1
 
 
+def test_settings_payload_includes_token_usage_summary(
+    tmp_path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    config_path = tmp_path / "config.json"
+    config = Config()
+    save_config(config, config_path)
+    monkeypatch.setattr("nanobot.config.loader._current_config_path", config_path)
+    monkeypatch.setattr("nanobot.webui.token_usage.get_webui_dir", lambda: tmp_path / "webui")
+
+    from nanobot.webui.token_usage import record_token_usage
+
+    record_token_usage({"prompt_tokens": 10, "completion_tokens": 5})
+
+    payload = settings_payload()
+
+    assert payload["usage"]["total_tokens_30d"] == 15
+    assert payload["usage"]["total_tokens"] == 15
+    assert payload["usage"]["peak_day_tokens"] == 15
+    assert payload["usage"]["current_streak_days"] == 1
+    assert payload["usage"]["longest_streak_days"] == 1
+    assert payload["usage"]["active_days_30d"] == 1
+    assert payload["usage"]["requests_30d"] == 1
+
+
+def test_settings_usage_payload_returns_lightweight_token_usage(
+    tmp_path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    config_path = tmp_path / "config.json"
+    config = Config()
+    save_config(config, config_path)
+    monkeypatch.setattr("nanobot.config.loader._current_config_path", config_path)
+    monkeypatch.setattr("nanobot.webui.token_usage.get_webui_dir", lambda: tmp_path / "webui")
+
+    from nanobot.webui.token_usage import record_token_usage
+
+    record_token_usage({"prompt_tokens": 20, "completion_tokens": 2})
+
+    payload = settings_usage_payload()
+
+    assert payload["total_tokens"] == 22
+    assert payload["requests_30d"] == 1
+    assert "agent" not in payload
+
+
 def test_update_network_safety_settings_writes_local_service_flag(
     tmp_path,
     monkeypatch: pytest.MonkeyPatch,